CN102243380B - Reticle, digital image water level and image identification method - Google Patents
Reticle, digital image water level and image identification method Download PDFInfo
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- CN102243380B CN102243380B CN201010179367.6A CN201010179367A CN102243380B CN 102243380 B CN102243380 B CN 102243380B CN 201010179367 A CN201010179367 A CN 201010179367A CN 102243380 B CN102243380 B CN 102243380B
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Abstract
The invention relates to a reticle, a digital image water level and an image identification method. The digital image water level comprises a machine body, a light sensing component which is arranged on the machine body, and the reticle which is arranged on the machine body and positioned in front of the light sensing component; the reticle comprises at least one marked pattern; the marked pattern has a first color area and a second color area which are light-proof; and the first color area and the second color area are adjacent to each other and have different colors. The invention has the advantages that: an image to be shot can be shot by the light sensing component without light splitting; and the shot image is an image having the marked pattern and serves as an image reference point for subsequent image processing.
Description
Technical field
The present invention relates to a kind of spirit-leveling instrument, particularly a kind of digitized video spirit-leveling instrument.
Background technology
Consult Fig. 1,2,3, existing spirit-leveling instrument 1 is applicable to take the levelling pole 100 being erected in place to be measured, and comprise body 11, the objective lens head 12 that is sequentially spaced in this body 11 along axis L, magnifier group 13, Amici prism 14, the graticule 15 of printing opacity and eye lens head 16, and be arranged at the photosensory assembly 17 above this Amici prism 14 along the vertical direction H of vertical this axis L.This graticule 15 is circular, and has vertical marking line 151 and horizontal marking line 152.
During shooting, the image of this levelling pole 100 enters from this objective lens head 12, and amplification is produced when through this magnifier group 13, and orthogonal two points of optical images are produced after entering this Amici prism 14, wherein one point of optical image sequentially passes through this graticule 15 and this eye lens head 16 and imaging in the eye of user, wherein another point of optical image then imaging in this photosensory assembly 17.
When user observes the image of this levelling pole 100 through this eye lens head 16 (see Fig. 3), the angle of this spirit-leveling instrument 1 of adjustable makes the image of this levelling pole 100 coincide vertical in this, horizontal marking line 151,152, next this photosensory assembly 17 can be utilized synchronously to get off for subsequent images process (see Fig. 4) by filming image, and then showing that the image of this levelling pole 100 is in the scale to be measured of center, the height of last comparison scale to be measured and this spirit-leveling instrument 1 can calculate the difference in height between two places.
Consult Fig. 1,2,4, but, owing to imaging in point optical image of this photosensory assembly 17 not by this graticule 15, therefore the image photographed there is no the existence of this horizontal marking line 152, make when carrying out subsequent images process, must carry out image identification to the whole drawing comprising this levelling pole 100 and background pattern (not shown), not only lose time, and easily producing image because of background pattern judges the situation that maybe cannot differentiate by accident.
In addition, the brightness of this point of optical image produced due to this Amici prism 14 only has the half of raw video brightness respectively, therefore no matter when the observation of user, or last captured by the image that goes out, capital is comparatively dim, and causes the degree of difficulty in subsequent images identification.
In addition, the image observed to allow user is identical with the image photographed, this spirit-leveling instrument 1 must accurately control to make this Amici prism 14 identical with the distance of this photosensory assembly 17 and this graticule 15 respectively in time producing, and make the correction work of product comparatively difficult, and then increase extra production cost.
Summary of the invention
Therefore, the technical problem to be solved in the present invention is, for the above-mentioned defect of prior art, provides a kind of and can produce image reference point for the graticule of image processing, digitized video spirit-leveling instrument and image recognition method without light splitting.
The technical solution adopted for the present invention to solve the technical problems is, provides a kind of graticule, comprises printing opacity plate body and at least one sign pattern.This sign pattern is formed at this printing opacity plate body, and comprises lighttight first look district and the second look district, and this first and second look district arranges in next-door neighbour and color is different.
Present invention also offers a kind of digitized video spirit-leveling instrument, comprise body, photosensory assembly and graticule.This photosensory assembly is arranged at this body, this graticule is arranged at this body and is positioned at this photosensory assembly front, and comprise printing opacity plate body, and at least one sign pattern being formed at this printing opacity plate body, this sign pattern has lighttight first look district and the second look district, and this first and second look district goes to upper and lower next-door neighbour's setting and color is different.
Present invention also offers a kind of image recognition method, be applied to digitized video spirit-leveling instrument, this digitized video spirit-leveling instrument comprises photosensory assembly, be positioned at the graticule in this photosensory assembly front, and be electrically connected this photosensory assembly to process the computing module of the complete image of shooting, this graticule comprises the printing opacity plate body with horizontal datum, and two are symmetrical in this horizontal datum and are formed at this printing opacity plate body and have the sign pattern in lighttight first look district and the second look district, each indicates first of pattern, two look districts arrange in vertical next-door neighbour and color is different, this image recognition method utilizes this computing module to carry out processing and comprising following steps:
(A) record the area coordinate of two groups of area images, this area image scope contains corresponding each respectively and indicates pattern;
(B) to the complete image of shooting with one with reference to threshold values for benchmark and carry out binary conversion treatment, and produce a double-colored image data;
(C) in each these dual-color images data of area image scope interscan and using adjacent pixel change place in the first look district and the second look district as boundary coordinate;
(D) thickness of corresponding sign pattern is scanned with each boundary coordinate for reference point; And
(E) calculate with the thickness gauge of corresponding boundary coordinate and this sign pattern the position that each indicates pattern, and calculating is arranged in the position of these sign pattern central authorities to show that this horizontal datum is in the position of image.
Effect of the present invention is that image to be captured can under without the situation of light splitting captured by this photosensory assembly, and the image after shooting is the image with this sign pattern, with the image reference point as subsequent images process.
Accompanying drawing explanation
Fig. 1 is the measurement schematic diagram of existing spirit-leveling instrument and levelling pole;
Fig. 2 is the schematic diagram of the graticule of this existing spirit-leveling instrument;
Fig. 3 is the striograph that user uses this spirit-leveling instrument and observes;
Fig. 4 is this local image figure taken by existing spirit-leveling instrument;
Fig. 5 is the preferred embodiment of digitized video spirit-leveling instrument of the present invention and the measurement schematic diagram of levelling pole;
Fig. 6 is the schematic diagram of the graticule of this preferred embodiment;
Fig. 7 is the vertical view of this preferred embodiment, illustrates that moving part is positioned at camera site;
Fig. 8 is the lateral side view of this preferred embodiment;
Fig. 9 is the view being similar to Fig. 7, illustrates that this moving part is positioned at visual fix;
Figure 10 is the local image figure taken by this preferred embodiment; And
Figure 11 is the process flow diagram of the image recognition method of this preferred embodiment.
Embodiment
Aforementioned and other technology contents, feature and effect for the present invention, in the detailed description of a preferred embodiment of following cooperation accompanying drawing, can clearly present.
Consult Fig. 5,6,7, this preferred embodiment of digitized video spirit-leveling instrument 2 of the present invention comprises body 3, photosensory assembly 4, graticule 5, lens unit 6, and image unit 7.
This body 3 comprises holding part 31, and is arranged at this holding part 31 rear can relative to the moving part 32 of this holding part 31 movement.
This photosensory assembly 4 is installed on the moving part 32 of this body 3, and can move relative to this holding part 31 with this moving part 32.In the present embodiment, this photosensory assembly 4 is a kind of Complimentary Metal-Oxide semiconductor (Complementary Metal-Oxide Semiconductor, CMOS) optical module of material is made, but the optical module of a kind of photosensitive coupling component (Charge Coupled Device, CCD) material also can be used to make.
Be positioned at this photosensory assembly 4 front in the holding part 31 that this graticule 5 is installed on this body 3, and comprise rounded and have respectively and be formed at this printing opacity plate body 51 by the horizontal datum X in the center of circle and the printing opacity plate body 51, two of vertical reference line Y and be formed at the vertical marking line 53 of this printing opacity plate body 51 with 52, two, the sign pattern of this horizontal datum X interval one predeterminable range respectively, and three horizontal marking lines 54 being formed at this printing opacity plate body 51.
In the present embodiment, this sign pattern 52 and this vertical marking line 53 is upper and lower is respectively symmetrical in this horizontal datum X, this vertical marking line 53 arranges along this vertical reference line Y interval and does not pass through the center of circle.It is arrange along this horizontal datum X that this horizontal marking line 54 is positioned at middle one, and this sign pattern 52, this horizontal marking line 54 lay respectively at the left and right side of this vertical reference line Y.
Each indicates a pair first look districts 521 that pattern 52 has light tight and upper and lower interval, and the second look district 522 between this first look district 521, and this first look district 521 and this second look district 522 go to upper and lower next-door neighbour's setting and color is different.In the present embodiment, each indicates pattern 52 in horizontal bar code like, and this first look district 521 is black, and this second look district 522 is white.
This lens unit 6 comprise along axis C be arranged at intervals at this graticule 5 front objective lens head 61, to be arranged between this objective lens head 61 and this graticule 5 and the magnifier group 62 be installed in this holding part 31 along this axis C, and be installed on this body 3 moving part 32 and with the eye lens head 63 of this photosensory assembly 4 setting parallel to each other.
This image unit 7 is connected in this body 3, and comprises this photosensory assembly 4 of electrical connection to process the computing module 71 of the complete image of shooting, and is electrically connected the display module 72 of this computing module 71.In the present embodiment, this display module 72 is a kind of LCD Panel.
Consult Fig. 7,8,9, during operation, this moving part 32 can move between camera site and visual fix relative to this holding part 31, when this camera site (see Fig. 7,8), this photosensory assembly 4 is positioned at the rear of this graticule 5 along this axis C and can takes, when this visual fix (see Fig. 9), the rear that this eye lens head 63 is positioned at this graticule 5 along this axis C is observed for user.
Consult Fig. 5, 7, 9, when using this spirit-leveling instrument 2, first this moving part 32 is adjusted in this visual fix, and adjust this spirit-leveling instrument 2 and make this objective lens head 61 towards the levelling pole 800 being erected in place to be measured, now namely the image of this levelling pole 800 sequentially can pass through this objective lens head 61, this magnifier group 62, this graticule 5 and this eye lens head 63 and seen by user, now adjust this vertical marking line 53 that this spirit-leveling instrument 2 makes to see in image align with this levelling pole 800 after (see Figure 10), can take after this moving part 32 is adjusted to this camera site, last and show in this display module 72, now, take complete image and namely can comprise this levelling pole 800, background pattern (not shown), this sign pattern 52, this vertical marking line 53 and this horizontal marking line 54.
Next with an image recognition method, image processing operation is carried out to image, the main order of operation is to identify that in image, this levelling pole 800 is in the scale of image center position, therefore after calculating the centre coordinate of image, carry out identification for the image of this central area again and can reduce operation time in a large number, and got rid of background pattern unnecessary in a large number due to the image of central area, also can reduce arithmetic eror.
Therefore, before this image spirit-leveling instrument 2 dispatches from the factory, store the area coordinate of two groups of area images in advance in this computing module 71, wherein this area image scope contains this corresponding sign pattern 52 respectively, wherein, each area coordinate is one group of starting point coordinate being positioned at the corresponding area image upper left corner, and one group of terminal point coordinate being positioned at the corresponding area image lower right corner.After image taken by this digitized video spirit-leveling instrument 2, namely this computing module 71 has carried out image identification to the image after shooting.
Consult Fig. 7,10,11, this image recognition method comprises following steps 92, step 94, step 96, and step 98.
In step 92, image processing is carried out to produce an image data to the complete image of shooting, in the present embodiment, be with one with reference to threshold values for benchmark and carry out binary conversion treatment, and produce one there is double-colored image data, this image data is such as each picture element typical value.Wherein this double-colored image data is that the picture element lower than this reference threshold values changes black into, and namely picture element value is defined as 0, and the picture element being not less than this reference threshold values changes white into, and namely picture element value is defined as 255 by the image data of the complete image of shooting.
In step 94, at each this image data of area image scope interscan and using adjacent pixel change place in the first look district 521 and the second look district 522 as boundary coordinate, wherein, the quantity of boundary coordinate is two and is respectively the two edges in this first look district 521 adjacent of this second look district 522.In the present embodiment, scanning sequency starts to scan towards the right from the starting point coordinate of corresponding area image scope, and after the right margin arriving this area image scope, restart towards right scanning from the left margin of next column, and continue this order until terminal point coordinate.
In step 96, the thickness in the second look district 522 of corresponding sign pattern 52 is scanned with each boundary coordinate for reference point respectively.In the present embodiment, the unit of indication thickness is the quantity of picture element.
In step 98, calculate with corresponding boundary coordinate and the thickness gauge in the second look district 522 that indicates pattern 52 position that each indicates pattern 52, and calculate be arranged in these sign pattern 52 central authorities position to show that this horizontal datum X is in the position of image.
Utilize in white and black first look district 521 and the second look district 522 in this sign pattern 52, and this image recognition method, this computing module 71 can be easy to the position calculating this horizontal datum X in image, and can start to identify the image of central area.It is worth mentioning that, the scale value drawn after identifying can directly be shown on this display module 72 inspects (not shown) for user.
What deserves to be explained is, because the predeterminable range between this sign pattern 52 and this horizontal datum X also can be known parameter, therefore the present invention also can be simplified to only design one sign pattern 52, still can be extrapolated the position of this horizontal datum X by translation.Now, before dispatching from the factory, only need the area coordinate storing one group of area image in advance in this computing module 71, only this group area image is dealt with in this step 94 and this step 96, in this step 98, the position of this horizontal datum in image can be calculated equally with the thickness of boundary coordinate, this sign pattern 52 and this predeterminable range.
Via above explanation, can again advantage of the present invention be summarized as follows:
One, this sign pattern 52 can be taken in image, and then subsequent images processing operation is got rid of fast need not participate in the background pattern of computing, and reduces operation time and issuable error.
Two, brightness can be reduced because of this Amici prism 14 compared to existing spirit-leveling instrument 1, the image brilliance taken by the present invention can be comparatively limpid in sight.
Three, this photosensory assembly 4 is installed on this moving part 32 respectively with this eye lens head 63, therefore when assembling product, only need to carry out a correction operation to this moving part 32, must correct the distance of this Amici prism 14 and this photosensory assembly 17 and this graticule 15 respectively compared to existing spirit-leveling instrument 1, the present invention can reduce assembling and the correction work of product.
Four, each indicates pattern 52 because have the different look district of two kinds of colors, can not cause and cannot differentiate because the look district color of background and sign is close.
In sum, image to be captured can under without the situation of light splitting by this graticule 5 captured by this photosensory assembly 4, make the image after shooting be the image with this sign pattern 52, and as the image reference point of subsequent images process, therefore really can reach object of the present invention.
The foregoing is only preferred embodiment of the present invention, can not limit scope of the invention process with this, namely all simple equivalences done according to the claims in the present invention and invention description content change and modify, and all still remain within the scope of the patent.
Claims (10)
1. a graticule, is characterized in that, comprises:
Printing opacity plate body, comprises horizontal datum, vertical reference line, three horizontal marking lines and two vertical marking lines; And
At least one sign pattern, is formed at this printing opacity plate body, and comprises lighttight first look district and the second look district, and this first and second look district arranges in next-door neighbour and color is different;
This sign pattern and this horizontal datum interval one predeterminable range, these two vertical marking lines up and down symmetrical, to arrange along this vertical reference line interval and not by the center of light-passing board body, this horizontal marking line is positioned at middle one and arranges along this horizontal datum, and this sign pattern, this horizontal marking line lay respectively at the left and right side of this vertical reference line.
2. according to graticule according to claim 1, it is characterized in that, this sign pattern is horizontal bar code like, comprises the first look district at a pair interval and the second look district between this first look district.
3. according to graticule according to claim 2, it is characterized in that, the wherein one of this first look district and this second look is white, and another one is black.
4. according to graticule according to claim 1, it is characterized in that, this graticule comprises the sign pattern that quantity is two, and this sign pattern is upper and lower is symmetrical in this horizontal datum.
5. according to graticule according to claim 1, it is characterized in that, this vertical marking line is symmetrical in this horizontal datum and is formed at this printing opacity plate body.
6. a digitized video spirit-leveling instrument, is characterized in that, comprises:
Body;
Photosensory assembly, is arranged at this body; And
Graticule according to any one of claim 1-5, is arranged at this body and is positioned at the front of this photosensory assembly.
7. according to digitized video spirit-leveling instrument according to claim 6, more comprise lens unit, this lens unit comprise be arranged at intervals at this graticule opposite side along an axis in contrast to this photosensory assembly objective lens head, to be arranged at the magnifier group between this objective lens head and this graticule along this axis and to be arranged at the eye lens head of this body.
8. according to digitized video spirit-leveling instrument according to claim 7, it is characterized in that, this body comprises the holding part installing this magnifier group and this graticule, and be arranged at the moving part of this holding part side, this photosensory assembly and this eye lens head are installed on this moving part parallel to each other, this moving part can move between a camera site and a visual fix relative to this holding part, when this camera site, this photosensory assembly aims at this graticule along this axis, when this visual fix, this eye lens head aims at this graticule along this axis.
9. an image recognition method, be applied to digitized video spirit-leveling instrument, it is characterized in that, this digitized video spirit-leveling instrument comprises graticule and computing module, this graticule comprises and has horizontal datum, vertical reference line, three horizontal marking lines, and the printing opacity plate body of two vertical marking lines, and be formed at this printing opacity plate body and there is lighttight first look district and the second look district and and the sign pattern of this horizontal datum interval one predeterminable range, this is first years old, two look districts arrange in next-door neighbour and color is different, these two vertical marking lines are symmetrical along the setting of this vertical reference line interval and not by the center of light-passing board body up and down, this horizontal marking line is positioned at middle one and arranges along this horizontal datum, this sign pattern, this horizontal marking line lays respectively at a left side for this vertical reference line, right side, this computing module comprises the area coordinate of the area image stored in advance, wherein this area image scope contains this sign pattern, after an image taken by this digitized video spirit-leveling instrument, this computing module carries out image identification to this image, and this image recognition method comprises following steps:
(A) this image is carried out to the image processing of binaryzation, to obtain double-colored image data;
(B) at this this image data of area image interscan and using adjacent pixel change place in the first look district and the second look district as boundary coordinate;
(C) be that reference point carries out scanning this sign pattern to calculate the thickness of this sign pattern with boundary coordinate; And
(D) position of this horizontal datum in image is calculated with the thickness of boundary coordinate, this sign pattern and this predeterminable range.
10. according to image recognition method according to claim 9, it is characterized in that, this sign pattern is horizontal bar code like, comprise the first look district at a pair interval and the second look district between this first look district, boundary coordinate in this step (B) be this second look district respectively with this position that the first look district is had a common boundary, scan from two boundary coordinates in this second look district respectively and calculate the thickness of this sign pattern in this step (C), with boundary coordinate in this step (D), the thickness in this second look district and this predeterminable range calculate the position of this horizontal datum in image.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010179367.6A CN102243380B (en) | 2010-05-14 | 2010-05-14 | Reticle, digital image water level and image identification method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201010179367.6A CN102243380B (en) | 2010-05-14 | 2010-05-14 | Reticle, digital image water level and image identification method |
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| Publication Number | Publication Date |
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| CN102243380A CN102243380A (en) | 2011-11-16 |
| CN102243380B true CN102243380B (en) | 2015-03-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201010179367.6A Expired - Fee Related CN102243380B (en) | 2010-05-14 | 2010-05-14 | Reticle, digital image water level and image identification method |
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| CN105806192B (en) * | 2016-04-27 | 2019-06-18 | 航天材料及工艺研究所 | Large-scale composite material box body guide rail assembly technique |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6445497B1 (en) * | 1999-07-22 | 2002-09-03 | Aerospatiale Matra Missiles | Optical sighting system |
| CN1619258A (en) * | 2004-12-03 | 2005-05-25 | 中国地震局第二监测中心 | Digital level gauge and optical level gauge indoor detection device |
| CN2831045Y (en) * | 2005-04-04 | 2006-10-25 | 武汉大学 | Digital electronic level |
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2010
- 2010-05-14 CN CN201010179367.6A patent/CN102243380B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6445497B1 (en) * | 1999-07-22 | 2002-09-03 | Aerospatiale Matra Missiles | Optical sighting system |
| CN1619258A (en) * | 2004-12-03 | 2005-05-25 | 中国地震局第二监测中心 | Digital level gauge and optical level gauge indoor detection device |
| CN2831045Y (en) * | 2005-04-04 | 2006-10-25 | 武汉大学 | Digital electronic level |
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